There's a version of this conversation that's been happening in IT departments for a decade. "We have antivirus." Full stop. For most of the 2010s, that was acceptable. It isn't anymore.
What antivirus actually does
Traditional antivirus works by comparing files against a database of known malicious signatures. It's a blacklist. If the threat is on the list, it gets blocked. If it isn't — because it's new, modified, or fileless — it doesn't. Attackers have known this for years. Modern malware is engineered to evade signature detection by default.
The gap: Fileless attacks, living-off-the-land techniques, and AI-assisted exploit generation all produce threats that look legitimate to a signature scanner. They use built-in tools like PowerShell or WMI, they don't write files to disk, and they're gone before the next definition update arrives.
What EDR does differently
Endpoint Detection and Response tools like Kaspersky Next EDR don't rely on signatures alone. They monitor behaviour — what a process does, not just what it looks like. Lateral movement, privilege escalation, unusual network connections, suspicious memory operations — EDR watches for these patterns in real time and can contain a threat automatically before it spreads.
The South African context
South Africa ranks consistently among the top targeted countries for ransomware in Africa. Businesses operating with legacy antivirus and no active monitoring are increasingly exposed — especially as AI tools lower the barrier for attackers to craft convincing phishing campaigns and generate novel exploits at scale.
The recommendation: For any business handling sensitive client data, financial records, or operating critical infrastructure, EDR is the minimum viable endpoint security posture in 2026. At Agnostix, we deploy, configure and monitor Kaspersky Next EDR — and we do it in a way that's sized for South African businesses, not enterprise budgets.
